Gas washer



March 25, 1930. F. H. WAGNER GAS WASHER 1927 2 Sheets-Sheet l Filed June28 flbbozwaga March 25, 1930. F. H. WAGNER GAS WASHER Filed June 28,1927 2 Sheets-Shea?. 2

Patented' Mar. 25, 1930 UNITED sT-Ai'rEs PATENT OFFICE FREDERICK HENRYWAGNER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE BART- LETT HAYWARDCOMPANY, E BALTIMORE, MARYLAND, A CORPORATION Ol.

MARYLAND IApplication Atiled. June 28,

' This invention pertains to liquid and gas contact apparatus and morespecifically relates t'o a washer in which gases such as blast furnacegases may be washed to remove the 3 solids from the gas.

The invention is illustrated in the accompanying drawings wherein,

Figure 1 is a vertical sectional view of the apparatus;

Figure 2 a transverse horizontal sectional view taken on the line II--IIof Figure l; and i Figure 3 a similar view taken on the line III-III ofFi re 1. v

The main obJect of the invention is to provide an apparatus whereinthe-gas is compelled to pass through various sprays; .through variouswater curtains; through various wetted screens; and through sheets ge ofwater which are thrown outwardly from the center of the machine towardthe inner face of the casing. The arrangement is such that the gaseswhich are forced or drawn through the apparatus take a tortuous pasz5sage and, as above noted, pass through the water employed for coolingand cleaning the same.

It will beY appreciated that the apparatus may be made of Aany desiredheightby employing separate sections or building 'the casing. of therequisite height -but in the instant case I have shown, merely for thepurpose of illustration, a single casing or shell denoted by 1 and whichis cylindrical in form. The l shell or casing will be supported upon asuitable foundation, not shown, and is rovided with a gas ,inlet 2 whichopens into t e lower end of the Casin and with a gas outlet 3 at theupper end. aid outlet is 1n communication with a chamber 4 formedbetween the top of the casing 5, an annular frusto-conical partition orelement 6 and a vertically disposed cylindrical member 7 having anopening 8 in that side thereof remote from the outits lower end and isin direct. communication with a chamber 9 immediately below theparftition or wall 6.

Extending vertically through the shell is av 59 centrally'disposed shaft10 to which rotary let 3. The-cylindrical member 7 is open at-v GASWASHER 1927. serial No. 202,124.

motion is imparted through any suitable means, not shown. Propersupports for the upper and lower ends of the shaft will, of course, beprovided but as these are well known in the art I have not deemed itnecessary to illustrate the same.

The inlet 2 opens into what may be termed the lower chamber 11, theupper ortion of the chamber being defined by the ottom of a pan-likemember 12, the up er edge whereof is serrated or notched as s own A1nFigure 1. This pan will be su ported in spaced relation to the walls oft e casing by brackets 13 or in any other approved manner.

An outlet pipe 14 s provided in the base of the casing, extending upinto the chamber 11 so as to maintain a volume of water within the lowerportion thereof. Secured to the shaft 10, o r at least that portionthereof which is in the chamber 11, is a pumping element or cone-set 15,said element being 'the type shown in Letters Patent to Feld No. 983,-

x037, dated January 31st, 1911, though of.

course any other form of pumping and spraying element `may be utilizedin so far as the broad invention is concerned. The lower end of thiselement dips into the water in the lower portion of the apparatus andthrough centrifugal action tends to draw the water up and spray the samelaterally into intimate c ontact `with the incoming gas.

Secured to the shaft immediately above the pan 12 is another pumpingelement or coneset denoted by 16 and extendingoutwardly therefrom belowthe perforated portion is a series of vanes 17 placed in such angularrelation as to act as a pump or fan upon the gas and to throw the sameoutwardly between a series of perforated plates 18 preferably set in anangular relation to each other, as best shown in iFigure 2. In otherwords, the

plates, as will be seen upon reference to said.

figure, are not diametrically arranged within the shell or casing butare thrown olf-center so that their ends stand in spaced relation toeach other and form passages or pockets int and through which the gas isforced.

Overlying and rotatable with the coneset 16 is a distributor or sprayplate 19. This plate is imperforate and extends outwardly to, orslightly beyond, the inner ends of the plates 18 and beyond the edge ofthis plate 19, and overlying the upper edges of the plates 18, I providea foraminous surface 20. This surface may be produced 'from wirescreening of the desired and proper mesh.

As will be seen upon reference to` Figure 1, the inner portions of thelower edges of the perforate plates 18 are given a downward inclinationand a closure plate 21 conforming to such contour is secured in positionwith reference to such edges. Thus it will be seen that any gas passingupwardly around the pan 12 is caused to travel inwardly toward thecenter of the washer and then laterally into and between the frictionplates 18 and up through the foraminous or screen surface 20. In otherwords, the plate 19 which overlies the cone-set prevents the gas frompassing in a direct upward direction to the vnext chamber above.

The chamber in which the cone-set 16% operates is denoted by 11 and thegas, after it passes from said chamber and through'vthe foraminousplate, enters another chamber 11b. Mounted within this chamber is a pan22, said pan being supported with its edge in spaced relation to thewall of the casing upon suitable brackets or supports 13a. The pan, inthis instance, is rovided with a series of overflow or weir tu es 23,the lower ends of which extend below the bottom ofthe pan and arenotched so as to cause the water to break up in streams as it flows fromsaid pipes. These pipes or weirs maintain a given level of water withinthe pan so that the coneset 16a which cooperates with said pan willalways have an adequate supply of water.

- The arrangement of the friction plates; the

foraminous screen; the distributing plate; and the fan blades is thesame as that heretofore described and the parts are denoted by the samereference numerals with the exponent a added thereto. V

Above the chamber and elements just described is a further chamber 11cand in this chamber,as just noted. the same arrangement obtains as tothe mechanism and parts as is present in the chamber 11".

Partitions 22b willpreferably be provided in all of the pans to preventswirling of the liquid therein. y

The wash water is introduced into the apparatus through a pipe 24connected with any suitable source of supply under pressure. ,said pipebeing connected at its inner end to a head or nozzle 25. As will be seenupon reference to Figure 1, this nozzle is located centrally of theapparatus in fact surrounds the shaft 10 and the water discharges fromthe lower end thereof directly onto the distributor line or sprayedcondition toward the wall of underlying distributor plate through theWeir tubes or channels 23a. This flow of the water continues throughoutthe apparatus until it reaches the pan 12. It flows from this panthrough the notches formed inthe edge thereof in a series of streams andcollects in the bottom of the chamber 11 as indicated in Figure 1.

The flow of the gas is indicated by the arrows. Coming into the chamber11 from the inlet 2 the gas is brought into intimate contact with theliquid which is pumped up and sprayed outwardlyby the cone-set 1d. Itthen passes around the pan 12 in intimate .contact with the streams ofwater falling from said pan. It is then deflected inwardly to a certainextent by the closure element 21 and through the down-coming curtain ofsub- "divided streams passing downwardly between the plates 18. Then inits passage it re-curves outwardly, being forced between the inner endsof the plates 18 or into the pocket formed therebetween by the blades 17through the openings in the plates and upwardly vthrough the foraminousmember 2() where it meets the down-coming water passing from the chambernext above. l In passing through the pockets formed between the plates18 the gas is brought into frictional contact with the plates 18 andinasmuch as said surfaces are wetted they tend to remove the solids fromthe gas through frictional-action. So too, as the gas passes upwardlythrough the screen 2O further frictional action inheres.

As the gas leaves lthe screen or foraminous surface 20, after passingtherethrough, it must of necessity pass through the spray or film ofwater thrown outwardly by the distributor plate 19. Hence at this pointthe gas is again brought into intimate contact with the water. v A. TheHow of gas just set forth inheres in each of the succeeding chambers asthe gas passes upwardly until it enters the chamber 4 and passesoutwardly therefrom in a clean condition through the outlet 3.

It is, of course, to be understood that the pockets formed by the plates18 (0r18a) form in effect baiiles for the up-going gas. Other lll typesof baflies might be employed in conjunction with the 1stributor plateand still perform its function of throwing a spray transversely of the11p-coming gas. So too, the air propelling means associated with the'liquid pumping and spraying element located within'the casing; a seriesof plates extending inwardly from the wall o'f the casing forming aseries of pockets open at their inner ends; a foraminous surface in theupper portion of the pockets and through which the gas passes; and meansfor supplying a wash liquid to the pumping and spraying element.

2. In a as washer, the combination of a easing having a gas inlet andoutlet; a liquid pumping and spraying element located within thecasing;and a series oi plates arranged within the casing, said platesextending inwardly from the inner wall of said casing and orming aseries of pockets, said pockets having their inner ends opening towardthe pumping and spraying element, the walls oi the pockets beingangularly arranged with reference to each other. y

3. lIn a gas washer, the combination of a casing havm a gas inlet andoutlet; a liquid pumping an spraying element located within the easing;and a series of plates arranged within the casing forming a series ofpockets, said pockets being closed at their outer end and having theirinner ends opening toward the pumping and spraying element, the walls ofthe pockets being angularly arranged with reference to each other, saidwalls being perforate.

4. In a gas washer, the combination of a casing having a gas inlet andoutlet; a liquid pumping and spraying element located withl 1n thecasing; a series of plates arranged within the casing forming a seriesof pockets, said pockets being closed at their outerends and havingtheir inner ends opening toward the pumping and spraying element, thewalls of" the pockets being angularly arranged with reference to eachother, said walls being perforate; and .a foraminous outlet for thepockets located at the upper portion thereof.

5. In a gas washer, the combination of' a casing; a combined liquidpumping and spraying element located centrally thereof; a series ofplates located around the same forming a series of pockets, the innerends of said pockets opening toward the spraying element; and meansassociated with the latter element for forcing the gas into the pockets.

6. In a gas washer, the combination of a casing; a liquid umping andspraying element mounted t erein; means arranged in line with the sprayfor battling the passage of a gas through the washer;

means associated with the pumping and spraying element for throwingliquid transversely of the flow of as 'from the bailing means; and meansfor ceding liquid to said liqpid throwing means.

In a gas washer, the combination of a casing; a liquid pumping andspraying element mounted therein; means arranged in line with the sprayfor baiiling the passage of gas through the washer; an imperforate plateoverlying the pumping and spraying element and rotatable therewith, saidplate lying in a plane substantially coincident with the gas dischargeof the baiile means; and means for feeding liquid to said plate.

8. In a gas washer, the combination of a casing; a liquid pumping andspraying element mounted therein; a plurality of plates extendinginwardly from the wall of the casing toward said pumping element, saidplates being perforate and standing at an angular relation to each otherand forming a series of pockets opening toward the pumping and sprayingelement; a closure extending around beneath the lower edges of saidplates; an annular screen surface overlying the outer upper edges ofsaid plates and forming a gas discharge from the pockets; a distributorplate associated with the spraying and pumping element; and means forfeeding liquid to said plate.

9. In a gas washer, the combination of a casing having a gas inlet atits lower and a gas outlet at its `upper end; means for introducingliquid into the upper portion oi the casing and centrally thereof; ashaft ein tending down through the casing; a pan standing in spacedrelation to the walls of the casing; an inverted rustro-,conical pumping and spraying element carried by the shaft and dipping at its lowerend into the pan; a distributor plate overlying the upper end of saidfrusto-conical element and upon which the liquid introduced into thewasher is discharged; a series ot plates extending inwardly from thewall of the casing, and forming a series of pockets opening at theirinner ends in line with the spray forming portion of the frusto-conicalelement; and a foraminous body overlying the upper portion of thepockets adjacent their outer ends.

10. Ina gas washer, the combination of a casing having a gas inlet atits lower end and a gas outlet at its upper end; means for introducingliquid into the upper portion oi the casing and centrally thereof; ashaft ex tending down through the casing; a par standing in spacedrelation to the walls of the casing; an inverted truste-conical pumpingand spraying element carried by the shaft and dipping at its lower endinto the pan; a distributor plate overlying the upper end of saidfrusto-conical member and upon which the liquid introduced into thewasher is dim charged; a series of plates extending inwar L III ly fromthe wall of the casing and forming a series of pockets, said pocketshaving openings at their inner ends in line with they spray formingportion of the frusto-conical element; a oraminous body overlying theupper portion ofthe pockets adjacent their out.

er ends and means associated with the rustoconical member for forcingthe gas into the open ends of the pockets.

11. In a gas washer, the combination of a casing having a gas inlet atits lower end and a gas outlet at its upper end; means for introducingliquid into the upper portion of the casing and centrally thereof; ashaft extending down through the casing; a series of pans mounted in thecasing in spaced relation to each other and to the walls of the casing,a plurality of successive pans having at least one weir which dischargeswater in a downward direction inward of the marginal f portion of thepan; a pumping and spraying,

element mounted above each4 pan and cured to the shaft for rotationtherewith, the lower end of each pumping element extend ing into the panimmediately below the same;

name to this specification.

FREDERICK vHENRY WAGNER.

a series of perforate partitions forming pockL ets extending inwardlyfrom -the inner wall of the casing in line with each of the sprayingelements, said pockets being open at their inner ends; an annular4fora-minous body overlying the upper outer ends of said pockets to ormgas discharge openings; and a distribu` tor plate associated with eachof the pumping and spraying elements, said distributor plate serving tothrow outwardly the liquids l which is discharged thereon. y

12. In a gas washer, the combination of a casing having a gas inlet atits lower end and a gas outlet at its upper end; means for introducingliquid into the upper por- 4 tion of thecasing and centrally thereof; a

shaft extending down throughthe casing; a series or pans ymounted in thecasing invspaoed relation to each other and to the walls of the casing,a plurality of successive pans having at least one weir which dischargeswater in a downward direction inward of the marginal portion of the pan;a pumping and spraying element mounted above each pan and secured to theshaft for rotation therewith, the lower end of each pumping elementextending into the pan immediately below the same; a series ot perforatepartitions forming pockets extending inwardly from` the inner wall ofthe casing in line with each ot the spraying elements, Asaid pocketsbeing open at their inner ends; an annular oraminous body overlying theupper outer ends of said pockets to form gas dischargeppenings; adistributor plate associated with each of the pumping and sprayingelements, said distributor plate servin to throw outwardly the liquidwhich is disc arged thereon; and a series of radially disposed inclinedblades extending outwardly from each of the pump-

